Method of making steam-boiler nozzles.



G. I. BENNETT. METHOD OF MAKING STEAM BOILER NOZZLES.

APPLICATION FILED MAR. 10, I910.

Patentd Jan 24, 1911.

mm alumina, Ling" Immguon. u c

T N T OFFIC CHARLES I. BEfiNETT, 01 BRIDGEPOBT, CONNECTICUT.

' I Mansion on Maxine STEAM-BOILER nozznns.

Specification of Application filed March To all whom it may concern:

Be it known that I, CHARLES F. Bnnnn'rr, a citizen of the United vStates, residing at Bridgeport, Fairfield county, Connecticut, have invented certain new and useful Imrovements in Methods of Making Steamoiler Nozzles; and I do declare the following to. be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use thesame.

My invention relates to certamnew and useful improvements in the method of mak: ing steam boiler nozzles and consists in the novel steps and methods hereinafter fully set forth and then particularly pointed out in the claim which concludes this description. 7 s

A nozzle for a steam boiler provides a suitable outlet for the steam, and connection between such nozzle and a steam system the lower plane 0 .1 gether, an

of the completed nozzle as tion whileor a steam engine 1s usually in the form of a flanged pipe bolted to the upper flange of the nozzle, and it is therefore ighly important that the nozzle should be steam tight from the upper lane of its top flange to its bottom flange, and the ob ect of my invention is to provide a nozzle that is practically integfal while at the same time the interiorof t e'nozzleis rfectl smooth and unbroken so thatt ere can e no obstruction whatever to the free passage of the steam. Y

In the accompanying drawing Figure 1 .is. a side elevatlon showing thesections of my improved nozzle 111 V proper relative position preparatory to welding the same tod-Fig. 2 1s a sectional elevation it appears after weldin numbers of reference denote like arts inhoth figures of the dra Heret ejore steam-boiler nozz es have been m de'm ms'ections one of which comprises the botto flange and thesentire nozzle por theother section is the top flange itselfwhieh has been secured around thegend but in order .to provide for such construction it has been necessary to "so that the top flange mig same, and this construction has causedthe ,inner wall of th surfaces, which,

at all desirable.

end of the nozzle ht rest against'the form a shoulder near the nozzle to present uneven hile they are not partlcunevertheless are not l'arly disadvanta eons,

f thB'COIlt-ltlfitlOIl Moreover,

and expansion of the metal is very a t to cause a steam leakage between the top angc and the end of the nozzle and this of course is a serious defect." My improvement overcomes these disadvantages above noted and will be best understood from the following description.

In carryin out my invention I first draw from a ducti e iece of sheet metal the main body portion ot the nozzle proper, that portion of the metal which is not submitted to the drawing operation being of such dimensions and shape that it constitutes the lower flange of'the nozzle; I then-draw from anor outer end of the nozzle, leaving the undrawn portion to constitute the upper flange of the nozzle; the inner edges of these two nozzle portions are identical so far as inside and outside diameters are concerned and they are then omitted together so that they will coincide in all respects and form a tapered nozzle gradually decreasing in diameter from base to orifice, and by any suitable welding process they are firmly united. In the drawing 1 is the bottom flange and 2 the main portion of the nozzle body which is drawn into shape from a suitable piece of sheet metal so that said flange and body'portion are integral. 3 is the top flange and t the outer portion of the nozzle which is drawn from a suitable piece of sheet metal so that said flange and outer portion are integral. The extremities of these 'drawn portions have-the same external and internal diameters so that when placed in abutment they will coincide, and after they have been so placed they are welded together by any suitable welding-process, the welded joint bein denoted by the numeral 5 in Fi 2. It Wlll thus be seen that the interior o the nozzle will be smooth and "unbroken while for. all practical purposes the nozzle is an 1ntegral structure an steam leakage is rendered impossible. The lower flange 1s *sha ed to conform to'the contour of the boi er'and is provided that said flange may b while the top flange is provided with belt holes 7 so that the nozzle maybe bolted to the flange of any suitable connecting pipe.

Having thus'described'my invention what I claim as new and desire to secure by ters Patent is a Themethod of makingsteam boiler nozzles, which consists in drawing a tapered tu-' LBt" other piece of ductile sheet metal the smaller v joining the base of said. body, drawing :1

,dually ,decreasing'in diameter from the base of the tubular body toward the orifice, and finally welding said ends together.

In testimony whereof I affixmy signature 1 5 bnlar body from-n metal sheet and simulfi nozzle is formed gra i':1 11oonsl y-f0nning anintegral flange ad- I separate tubular orifice from a metalsheet .and snnultaneouslyiormmg an integral flange adjoining the base of said orifice, i'in presenceof two Witnesses. said tubnlarbody and orifice being so formed CHARLES F. BENNETT.

inner andiouterdiameters of their j 'Witnessesz' F. W. SMITH, Jzx, M. T. LONGDEN.

that the respective ends are identical, then-abutting said ends in coincidence whereby atapered 

